I understand what a lens hood does, and I've read several of the questions about them here on the site, but I am still left wondering whether I could get a lens hood that would work on both the lenses I have.
My equipment is a Canon 600D and a 18-55mm (and about to be a 70-300mm). I've read there could be problems with vignetting potentially if a lens hood were to be used on a 18mm focus as well as a 300mm focus.
Essentially what I'm asking is can I get just one lens hood for my kit, and if so what are the recommendations for sub £50?